PREVAC | Technology for science and industry 15.11.2026 01:03
UV source UVS 40A2
High intensity photon source that can be operated with a variety of discharge gases.
The UVS 40A2 is used in UPS (ultraviolet photoelectron spectroscopy) research. The UVS is water cooled for maximum stability and features fully interlocked safety circuitry. The discharge has a maximum photon intensity at a pressure of several mbar so dual differential pumping stages are employed in order to maintain the host chamber pressure. The UVS 40A2 is designed so that a continuous gas flow is maintained through the discharge region. This is a great advantage in maintaining the cleanliness of the discharge capillary and results in very long service intervals.
✅ Available immediately
Technical data
| Mounting flange | DN 40 CF (non-rotatable) |
| Gases | He, Ar (option: Kr, Xe, Ne) |
| Photocurrent | 1 – 80 nA |
| Photon flux | >1016 photons / s*sr |
| He I / He II ratio | better than 3:1 |
| Water cooling | required, pressure 2 – 3 bar (max. 6 bar), flow > 1.5 l/min, Tmax= 30 °C |
| Port aligner | integral , +/- 4° |
| Discharge current | 40 – 300 mA |
| Beam divergence | small beam divergence: <1° |
| Capillary I.D. | 1.5 mm (others on request) |
| Insertion length | 220 mm (standard), other on request, OD: 9.5 mm |
| FWHM | dependent on working distance (e.g. 1.2 mm for distance 10 mm) |
| Typical working distance | 5 – 100 mm (optimum 5 – 50 mm) |
| Bakeout temperature | up to 200 °C |
| Working pressure | < 1 mbar |
Features
- Can be operated with various discharge gases
- Manual or auto ignition
- Control of the He I / He II ratio via precise adjustment of helium pressure and discharge current
- Easy operation
- Stable output
- Special designed discharge chamber
- Electronically stabilised discharge current
- Windowless, direct sight connection
Options
- Gas dosing system
- Customised insertion length
- Linear shift (50 – 100 mm)
- Vacuum Gauges set
- Chiller